L52_Area of Rectangles

Today's Lesson: Unit 13 Area of Rectangles

4TH GRADE MATH WITH MRS. SULSBERGER

Do NOW

Gather notebook

and pencil

Chat with your

friends

Jokes

Math

www.elementaryallinonemath.com

Where in real life do we find or use area?

To build a dog house.

To put flooring in a home.

To lay grass down on a football field.

To add a garden to you back yard.

Drag and Drop

Something you might find the area of ​

Placeholder

Drag these tiles and drop them in the correct blank above

a wall that needs paint

a ceiling that needs dusting

a pool that needs to be filled with water

4.MD.3
PPT

www.elementaryallinonemath.com

Let’s do another example:

The formula: l x w = Area

8cm x 4cm = 32 cm2

8cm

4cm

➢ In this example they tell us the length and the width so we

don’t have to count or measure.

Multiple Choice

How do you find the area of a rectangle?

• Length + Length + Length + Length
• Length + Width
• Length x Width
• Width x Width

Match

Match the following

12 inches squared

40 inches squared

77 inches squared

8 inches squared

• 12 inches squared

• 40 inches squared

• 77 inches squared

• 8 inches squared

4.MD.3
PPT

www.elementaryallinonemath.com

Let’s do another example:

Now we have a missing side.

What do we do?

24 cm2

6cm

?

www.elementaryallinonemath.com

Let’s do another example:

The top measurement is missing.

What do we do?

45 cm2

5 cm

?

Multiple Choice

 What is the missing measure if the Area is 50 m² ?

• 10 m

• 45 m

• 10 m²

• 7 m

Multiple Choice

What is the length of the missing side?

• 7 sq ft

• 7 feet

• 6 sq ft

• 8 feet

Dropdown

​ ​ ​

Select answer

Fill in the Blank

Did the student solve the problem correctly?

www.elementaryallinonemath.com

➢

Perimeter is the fence AROUND a
shape.

➢

Area is the space inside a 2-D
shape.

Multiple Select

How are you doing?

• A

• B

• C